发明授权
US5621065A Polycarbonate diols, their preparation and use as starting products for
polyurethane plastics
失效
聚碳酸酯二醇，其制备和用作聚氨酯塑料的起始产品
- 专利标题： Polycarbonate diols, their preparation and use as starting products for polyurethane plastics
- 专利标题（中）： 聚碳酸酯二醇，其制备和用作聚氨酯塑料的起始产品
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申请号： US626229申请日： 1996-03-29
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公开(公告)号： US5621065A公开(公告)日： 1997-04-15
- 发明人: Heinz Pudleiner , Hans-Georg Hoppe , Klaus K onig
- 申请人： Heinz Pudleiner , Hans-Georg Hoppe , Klaus K onig
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschift
- 当前专利权人： Bayer Aktiengesellschift
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX19513164.9 19950407
- 主分类号： C08G18/42
- IPC分类号： C08G18/42 ; C08G18/44 ; C08G18/65 ; C08G64/00 ; C08G64/02 ; C08G64/20 ; C08G18/34
摘要：
This invention relates to novel polycarbonates having hydroxyl end groups and an average molecular weight of 500 to 12,000, as determined by measuring the OH number, and being based on dimer diols containing either 36 or 44 carbon atoms. These novel polycarbonates are particularly suitable for the use in a process for the production of polyurethane plastics which are stable to hydrolysis and oxidation.
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